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c. F. BuRGEsS. BATTERY HAND LAMP. APPLICATON FILED MAY 14| 1920.

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cHAnLns F. Buitenss, or MADISON, wisconsin, Assrenon r.ro BuaenssBATTERY COlVlil-Jf-LNY,V F MADISON, WISCONSIN, A CORPORATION 0FWISCONSIN.

BATTERY 'HAND LAMP.

Specification of Letters Patent.

Patented July 4, 1922.

Application filed May 14, 1920. Serial No. 381,245.

To all whom t may concern: A f i Be it known that I, CHARLES F. BURGnss,

i a citizenl of the United States, residing at Madison, in the county ofDane, State of Wisconsin, have invented certain new and usefulImprovements in Battery f Hand Lamps; and I do hereby declare thefollowing to be a full,clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use theV same.

Battery hand; lamps as ordinarily constructed throw a ratherconcentrated beam of light of relatively small diameter. For somepurposes,vas for work at a desk, or around machinery, a more diffusedlight is desirable.

It is one ofthe objects of the present invention to provide a batteryhand'lamp so constructedl thatit easily can be converted for use indelivering diffused light, `or the usual concentrated beam, as occasionre quires.` To this end the reflectorr for the lamp is of specialconstruction and is removable with the lens and lens-supporting ring toleave an operative battery lamp-adapted like the ordinary candle fordistributing light'in substantially all directions. l

It is a -further object of the present invention'to so mount the lampand its associated parts that theyare readily accessible for adjustmentor renewal.V

It is a further object of the present invention to provide a resilientmounting-jef the lamp, preferablyfin the form of a yielding support forthe lamp socket, whereby shocks and blows from the battery against theinl ner and fragi'leterminal of the lamp are in dle to which alens-supporting ring can be addd if a concentrated beam of light isdesire 5 i Fig. 2 is a sectional elevation through a complete hand lamp;V and Fig. 3 is a view of the front end of the hand lamp with theenlarged head and its lens and reflector removed.

ln the particular embodiment illustrated in the drawings, the dry cells1 and 2, of which any suitable number may be provided, are arranged endto end in series relation within a paper tube 3. The naked bottom of thelowermost dry cell is electrically connected through a helical spring 4with a metal bottom cap `5 screw-threaded to the lower end of the tube 6which forms the casing of the hand lamp. This tube 6 may be of metal orvof fiber, in accordance with the usual practice. At the front end oftube 6 is a metal collar 7 preferably attached permanently to the tube,as by rivets 8.

This collar 7 may have lits `front edge turned f inward to form aretaining flange 9.

At the front end of the casing so formed, and ypreferably 3 attachedAthereto permanently, as by screw-threading intocollar 7 before thelatter is rivetedto tube 6, is an insulating disc 10. This is preferablymade of soft rubber or equivalent yielding land insulating material.Through a central opening in this insulating disc protrudes a lamp 11with its inner terminal 12 in contact with and therefore inelectricalconnection with a terminal 13 of the battery of dry cells. The lamp isprovided with a socket 14 in which it is suitably`v secured, as by screwthreads. Mounted inthe insulation and contacting with socket 14 is a pinor screw 15, serving as a conductor with which a sliding finger 16 maymake connection in usual manner when the lamp is to be lighted. Asliding push button 17 suitably mounted on the casing serves as a meansfor controlling movement of the contact finger 16. Other forms of switchmechanism can of course be used in completing the connection from thebottom terminal of the battery through spring 4; and cap 5 to lampsocket 1li.

The structure above described is a completely operative battery candlefor giving diffused light in practically all directions,

and the lighting of the lamp by the battery current is under fullcontrol of the switch mechanism and its actuating button 1T.

In addition to the structure above described, there may be andpreferably is provided a detachable head, one embodiment of which isillustrated in Fig. 2. The head there shown comprises a` threadedportion 18 engaging with threads on collar 7, a flaring portion 19, anda cylindrical portion 20, on a shoulder 21 of which is seated the flangeof a reflector 22. A lens 23 is seated on the reflector flange and thefront edge of the sheet metal head is spun over at 24 to permanentlygrip the lens and hold it and the reflector permanently in position.

The center of reflector 22 has an opening larger than the bulb of lamp11, so that the head may be unscrewed and removed from the casingwithout disturbing` the operative relation between the battery and thelamp. Ihe lamp socket 14 may have its upper edge flared outwardly toserve as a small reflecting surface, but the socket has a diametersmaller than that of the opening in the reflector so that an air gapintervenes at all times to insulate the reflector' from the socket.

lith the arrangement above described, the usual concentrate-d beam oflight is thrown by the hand lamp when the switch is closed at screw 15,and if a diffused light is desired, the flaring head 'is removed toconvert the hand lamp into the battery candie shown in Fig. 1. Thisadjustment may be made even when the lamp is burning and withoutdisturbing in any way the normal operative relation between the batteryand the incandescent lamp. If but a slight alteration in the beam oflight is desired, this may be effected by partially unscrewing the head,for by so doing, the reflector shifts with respect to the lamp, changingthe focal distance, with resultant change in the character of the beamdelivered by the hand lamp.

The facility with which the hand lamp can be taken apart and puttogether is of great convenience to the user, and particularly to asalesman demonstrating the device to a. prospective purchaser, for thereflector and the lens, are always held in proper operative relation tothe enlarged head and do not get scattered around. rllso, in putting theparts together' there is no danger of getting the reflector in crookedand then crushing it out of shape or spoiling the lamp or its socket asthe parts are screwed together, this being a difficulty commonlyexperienced with battery hand lamps now on the market. The brightsurface of reflector 22 need not be touched by the lingers, and so keepsbright even though it itnay have a delicate and highly polished ace.

Other objects and advantages of the construction described will beapparent to those skilled in the art, and changes in` details of theseveral parts are contemplated within the scope of the invention asdefined by the appended claims.

In a. companion application, Serial No. 371,599, filed April G, 1920,the support for the lamp socket may be of rigid material and detachablefrom the casing. Many features herein disclosed are claimed therein,broadly.

I claim 1. In a battery hand lamp, the combination of a casing, abattery of dry cells therein, a lamp connected with one. terminal ofsaid battery, a socket in which said lamp is threaded, a yielding discof insulation supporting said socket, a reflector insulated from saidsocket and removable therefrom, and means for establishing electricalconnection from the other terminal of said battory to said socket.

2. In a battery hand lamp, the combination of a battery, a lamp inoperative relation thereto, a casing for said battery, a soft rubberdisc closing the end of said casing and in which said lamp is mounted,and a reflector for said lamp removable therefrom without disturbing theoperative relation of said lamp to said battery, substantially asdescribed.

3. In a battery hand lamp, the combination of a battery, a casingtherefor, a lamp. connected with said battery, a socket for said lamp, ayielding disc of insulation clos- 10o ing the end of said casing andsupporting said socket, a reflector insulated from said socket andInova-ble away from said lamp and socket, said reflector having acentral opening through which the lamp bulb will pass, means foradjustably supporting said reflector in operative relation to said lamp,and means for completing the battery circuit through said lamp.

4. In a battery hand lamp, the combination of a casing having a threadedmetal end, a battery therein, a lamp in operative relation to saidbattery, a socket for said lamp, an insulating disc threaded to themetal end of said casing, said disc being yielding in character tocushion any impact of the battery on said lamp, a reflector insulatedfrom said socket, and means for moving said reflector with respect tothe said socket when the distribution of light from said lamp is to bealtered.

5. In a battery hand lamp, a casing, a battery therein, a lampcontacting with one terminal of said battery, a socket for said lamp, ayielding disk of insulation supporting said socket in said casing andcushioning any impact of the battery on the lamp and a reflectorinsulated from said socket and removable therefrom, substantially asdescribed.

6. In a battery hand lamp, a casing, a battery therein, a lamp connectedWith one terminal of said battery, a socket for said lamp, a yieldingdisk of insulation permanently secured to said easing and supportingsaid socket, and a reflector insulated from said socket and removabletherefrom, substantially as described.

7. In a battery hand lamp, the combination of a metal casing having athreaded front end, a battery therein, a lamp conneeted with saidbattery, a socket for said lamp, an insulating disc threaded to thefront end of said casing and supporting said socket therefrom, areflector for said lamp having a central opening through which the bulbof said lamp Will pa, and means for moving said reflector Whilemaintaining operative relation between said battery and said lamp.

In testimony whereof I aiix my si ature.

, CHARLES F. BR ESS.

